Gates 23743 Radiator Coolant Hose - Upper - Driver Side

Gates 23743 Molded Coolant Hose Overview

The Gates 23743 molded coolant hose is a radiator coolant hose built for upper driver side cooling-system service on select Subaru applications. It uses EPDM construction and molded shaping to match the routing needed for a clean replacement on Subaru Legacy and Subaru Outback models.

Gates Molded Coolant Hose products are built for upper, lower, bypass, heater, and other coolant hose locations using OEM-quality specifications. This line is designed to simplify radiator hose replacement on vehicles that need a formed hose rather than a universal cut-to-fit part.

Key Features

• Part number: 23743
• EPDM rubber construction for coolant-system use
• Molded hose design for proper routing
• 1.06 in. inside diameter at both ends
• 9.9 in. centerline length
• No spring and no quick-connect fittings
• Upper driver side radiator coolant hose application

Detailed Product Description

This Gates radiator coolant hose is shaped for direct replacement in the upper driver side position on 2010-2018 Subaru Legacy and 2010-2018 Subaru Outback models. The molded profile helps maintain the factory-style hose path, while the EPDM material is selected for coolant exposure and everyday engine-bay temperatures. If you are replacing a worn Subaru Legacy coolant hose or a Subaru Outback upper hose, Gates 23743 provides the correct formed layout for the listed applications.

This part cross-references Continental 66330 for the same application.

What This Hose Helps Address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse in the hose body
• Improper hose routing after a previous repair
• Loss of cooling-system pressure from hose deterioration
• Fitment issues caused by using a non-molded replacement hose

Installation Notes and Tips

Verify the vehicle year, model, and upper driver side hose location before installation. Inspect hose clamps, adjoining pipes, and coolant condition during replacement, and confirm the hose follows the original routing without twisting or kinking. This Gates 23743 hose is listed for 2010-2018 Subaru Legacy and 2010-2018 Subaru Outback upper driver side applications.

Quality Assurance

Gates manufactures molded coolant hoses to OEM-quality specifications for formed-fit cooling-system replacement. The Gates 23743 is part of the brand’s molded coolant hose line, which covers a wide range of radiator, heater, bypass, and other coolant hose applications.